Coupling



Ap ril 9, 1929. A PALLADY 1,708,736

COUPLING Filed Sept. 4. 1926 2 Sheets-Sheet l Harry/9? a [/44 3 ATTORNEYApril 9, 1929. H. PALLADY 1,708,736

' COUPLING Filed Sept. 4. 1926 2 Sheets-Sheet 2 Patented Apr. 9, 1929.

UNITED STATES HARRY A. PALLADY, OF TONKAWA, OKLAHOMA.

COUPLES G.

Application filed September 4, 1926. Serial No. 133,634.

This invention relates to a flexible coupling, the general object of theinvention being to provide means for connecting or conduits together insuch a manner that they can have relative movement while maintaining atight joint between them.

While the invention is mainly designed for rotary drilling rigs and inconjunction with the oil system thereof,it will, of course, beunderstood that the invention has other uses.

i This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a sectional view showing one form of the invention.

Figure 2 is a sectional view through another form of the invention.

Referring to Figure 1, 1 indicates a body which is formed with athreaded socket 2 at its lower end which, in this case, is designed tofit the standard rock bit and with a socket 3 in its upper end, theupper wall of which is threaded to receive a nut 4 which is providedwith the spanner receiving recesses 5. The pipe connection 6 which 1sconnected with the lubricant supplying pipe 7 extends into the socket 3and has a flange 8 which snugly fits the socket. The member 6 is ofconsiderably less diameter nut 4, through which it passes, so that saidmember 6 can have rocking movementwithout interference on the part ofthe nut. A gasket 9 is arranged between the flange S and the nut 4, awasher 10 bein arranged between the nut and gasket and a second gasket11 is placed between a retainer 12 and a washer 13 which engages theflange 8. The retainer 12 has a cylindrical part 12' which is adapted tohave telescopic action in the recess 6 formed at'the end of the member6. A filter screen 14 is held in place by the retainer 12, the socket 3havpipes of the oil containing water cage on a than the interiordiameterof the ing a reduced inner part 15 which receives the oil passingthrough the screen and which is in communication with the socket 2 bymeans of the threaded nipple 16.

Thus it will be seen that the member 1 and the member 6 have relativemovement without interrupting the oil passage and without causing a leajoint between the parts, as the flanges an gaskets will permit movementbetween the parts while preventing leakage of oil.

In Figure 2, a member 17 is placed in the upper socket of the body 1'and said member has a concaved upper face for receiving the convex faceof the head 18 formed on the member 6. A gasket 9 is placed above thehead 18 and the nut 4' and a gasket 11 is placed around the reducedlower part of the member 17 so that it will be compressed betweensaidmember and the bottom of the socket in the body 1, as said member 17 isslidably arranged in the body and will be pressed downwardly by therocking movement of the member 6'.

'When this arran ement is used in the lubricating system of a rockdrill, wear and breakage of the parts, due to the whipping pipe, isprevented, and the oil container has free action in the drill ipe.

p It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

A screen 18 may be placed at the upper end of the pipe connection 6 ofeach form of the invention to strain the liquid entering the connection,@the screen being held in laceb thesu l ie7. p What I claini p Acoupling of the class described comprising a body having a sockettherein, a flanged member seated in the socket, the flanged end aving aconcaved upper face, a packing ring between the flange and the bottom ofthe socket, a pipe having a flanged end which fits in the socket, saidend being of convex shape to engage the concaved part of the member, apacking ring resting on the flanged end and a nut threaded in the socketfor holding the parts therein.

In testimony whereof I aflix my signature.

HARRY A. PALLADY.

